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Electromagnetic Radiation
Electromagnetic (EM) radiation is the energy transmitted through space or a material medium in the form of electromagnetic waves. The frequency range of such waves is tremendous, and is shown by the electromagnetic spectrum. These waves include radio waves, microwaves, infrared waves, visible light waves, ultraviolet (UV) waves, X-rays, and gamma rays.
2,156 Questions
Why do photon of red light has a less penetrative ability than a gamma ray photon?
Well, honey, red light photons are like the friendly neighbor who stops by for a chat, while gamma ray photons are the aggressive door-to-door salesperson who won't take no for an answer. Red light photons have lower energy and longer wavelengths, making them less penetrative compared to the high-energy, short-wavelength gamma ray photons. It's like comparing a gentle breeze to a hurricane - one just doesn't pack the same punch as the other.
Why a photon of red light has less penetrative ability than a gamma ray photon?
A photon of red light has lower energy and shorter wavelength compared to a gamma ray photon. This means that red light has less penetrating power because it interacts less with matter compared to gamma rays, which have higher energy and can penetrate through materials more effectively.
What are the disadvantages of conduction convectionradiation?
Oh, dude, like, the disadvantages of conduction, convection, and radiation? Well, conduction can be slow because it relies on direct contact, convection might not work well in a vacuum since it needs a medium to transfer heat, and radiation can be inefficient if the surface area is small. But hey, at least they all help us understand how heat moves around, right?
Is the sea blue because it reflects the color of the sky?
Answer No, it is not. The color of the sea is based on the way it scatters and reflects light. The reds are generally absorbed, and the other colors, the greens and blues, are scattered with some reflection. Remember you're looking into the sea to see its color. Greens and blues are common because of what is in there and the way the light scatters and is reflected off of it.
Does light stop when it meets a solid object?
Some of it is absorbed, some is reflected, and some passes through. How much of each effect happens depends on the wavelength of the light and the composition of the object.
Would it make sense to place an x-rays or gamma ray telescope on a mountaintop?
Yes, placing an x-ray or gamma-ray telescope on a mountaintop can be beneficial as higher altitudes can reduce atmospheric interference, providing clearer observations of these high-energy wavelengths from space. Additionally, the remote location can minimize light pollution and electromagnetic interference, enhancing the telescope's sensitivity and accuracy.
What electromagnetic wave has a wavelength shorter than a microwave but longer than light?
The electromagnetic wave with a wavelength shorter than a microwave but longer than light is an infrared wave. These waves have wavelengths ranging from about 1 millimeter to 750 nanometers. They are commonly used in remote controls, heating applications, and thermal imaging technology.
What is the Electromagnetic Spectrum coefficient of the universe?
I'll go out on a limb here, and say that if such a thing as "electromagnetic spectrum
coefficient" existed, then either I would have heard of it by now, or else it would have
shown up in a search on arguably the currently most popular online search engine.
Neither of those conditions being satisfied, I have to say that I believe there to be
no answer to this one because the question itself is meaningless.
If the color (frequency, wavelength) of each is the same, then each photon carries
the same amount of energy. Three of them carry three times the energy that one
of them carries.
Would an electromagnetic pulse work in space?
Yes, an electromagnetic pulse (EMP) can work in space. Due to the lack of atmosphere in space, an EMP can have a broader and more powerful effect compared to on Earth, affecting unshielded electronics and communication systems on satellites and spacecraft.
Which property do all electromagnetic waves have in vacuums?
All electromagnetic waves travel at the speed of light in a vacuum.
What gas in stratosphere absorbs ultraviolet rays?
Ozone is the gas in the stratosphere that absorbs ultraviolet rays. It forms a protective layer that shields Earth from harmful UV radiation.
Is Gamma Ray a natural disaster?
No, a gamma ray is a highly energetic form of electromagnetic radiation, not a natural disaster. Natural disasters refer to catastrophic events like earthquakes, hurricanes, or wildfires that cause widespread destruction and harm to human life and property.
Why is the laser beam made of a light of a single colour?
The color of a beam of light is dependent on its wavelength. A laser will appear as one color because all the light being emitted from it is the same wavelength. This is also why lasers and laser pointers always have such a tight beam. By contrast, flashlights (which have much wider beams, and rely on mirrored interiors to amplify the light) have light at a variety of wavelengths, which is why the light is ultimately "colorless".
Not sure exactly what you are asking but you do it the same way as a 4 digit number
only the answer needs to have 3 decimal places in it when you are done.
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There may be different reasons for multiplying by 1.732, depending on the specific
situation in which you find yourself at that moment, which unfortunately you have
neglected to describe for us.
All I can tell you is that in general, whenever you need the square root of 3 and you're
in a hurry, you can use 1.732 in that emergency and the inaccuracy of your result
will be less than 3/1000 of 1 percent.
What parts of the electromagnetic spectrum are ionising?
X-rays and gamma rays are the parts of the electromagnetic spectrum that are ionizing, meaning they have enough energy to remove electrons from atoms or molecules.UV light can also be ionizing, but to a lesser extent.
How far do you need to be to avoid blindness from an open door microwave?
That would depend on the operating power level of the device, the contents of
the cooking chamber, and the exact angle from the sides of the oven to you.
A microwave oven that's able to run with the door open is hazardous to people
anywhere near it. DO NOT RUN IT. It must be unplugged, and repaired by a
technician who is factory-certified and knows what he's doing, before it's used
again. Take it from an Electrical Engineer with 35 years' microwave experience:
Do NOT call people into the kitchen and say "Hey look what the microwave is doing".
It is nothing to play around with !
Were there gamma rays in the singularity that gave rise to the big bang?
Yes, it is believed that gamma rays were present during the early stages of the Big Bang, produced as a result of high-energy processes. However, the extreme conditions of the early universe make it impossible to directly observe these gamma rays.
Which layer of gas molecules in the atmosphere is bombraded with rays from the sun?
The layer of gas molecules in the atmosphere that is bombarded with rays from the sun is the thermosphere. It is the outermost layer of Earth's atmosphere where solar radiation impacts the molecules, leading to high temperatures and the presence of the ionosphere.
Are microwave ovens light rays longer or shorter than light rays you can see?
Microwave ovens use longer light rays than the visible light rays we can see. Microwave radiation has a longer wavelength, which allows it to penetrate and heat food without being visible to the human eye.
Where is visible light place in electromagnetic spectrum?
That's hard to discuss, because the electromagnetic spectrum has no ends.
If you name a frequency, then no matter how low it is, I can name a lower one,
and no matter how high it is, I can name a higher one. So, it's easy to describe
the size of the visible portion, but it's hard to describe the size of the full EM spectrum.
So let's just talk about the size of the part of the E&M spectrum that humans
use for radio communication, and ignore all the rest of it ... the infra-red, x-rays,
ultraviolet, gamma rays, all that other stuff. Only the part that we know how to
generate and modulate with very precise frequency control, and transmit and
receive over significant distances.
That's the portion of the E&M spectrum with frequencies from about 60 KHz
to about 100 GHz (wavelengths from about 3 millimeters to 5 kilometers).
'Linearly', that's a range of about 100 GHz bottom-to-top. But a much better
way to talk about parts of the E&M spectrum is logarithmically ... how many
'octaves' (doublings) or 'decades' (multiplied by 10) they cover.
Measured that way, our use of radio spans about 21 octaves, or about 6.2 decades.
Now we're ready to go look up the frequency/wavelength range of visible light.
A typical human eye will respond to wavelengths from about 390 to 750 nm
(3.9 to 7.5 x 10-4 millimeters). In terms of frequency, this corresponds to a band
in the vicinity of 400-770 THz (400,000 to 770,000 GHz).
That makes the visible range about 0.95 octave, or about 0.28 decade ... only
about 41/2% as wide as the range of wavelengths we use for radio communication!
Now, for fun, we'll try and include those other E&M phenomena that we've been ignoring.
We'll still have to decide where the ends of the spectrum are, because it really doesn't
have any.
For the bottom frequency, let's take 60 Hz. That's the small amount of RF that
radiates from power lines, which we always ignore. The wavelength is about
5,000 kilometers. (!)
Let's take gamma radiation for the top end ... the stuff generated in nuclear
decay, supernovas, black holes, that sort of thing. Dangerous stuff because
of its high energy. We're still here only because Earth's atmosphere absorbs
most of the gamma radiation from space, and not much of it ever reaches the
ground. Astronauts have to be shielded from it.
Gamma rays typically have frequencies above 10 exahertz (or >1019 Hz), and
wavelength less than 10 picometers (less than the diameter of an atom.)
So now, our 'expanded' range of electromagnetic spectrum covers 57.2 octaves,
or 17.2 decades, and the range of visible light is about 1.6% as wide as that.
Bottom line . . . we don't actually "see" a whole lot of the E&M spectrum, but
we know how to build instruments that detect the parts we can't see.
The sequence of the listing in the question is correct. From longest to shortest wavelength, these four categories of EM radiation do in fact list in the order: 1). infrared 2). visible 3). ultraviolet 4). X-rays
What electromagnetic radiation does the SOHO detect?
The Solar and Heliospheric Observatory (SOHO) detects various forms of electromagnetic radiation, including visible light, ultraviolet light, and X-rays. These different types of radiation provide valuable information about the Sun's activity and the solar wind.
Is there a connection between the speed of alpha beta and gamma radiation?
None whatsoever -- these three phenomena have almost nothing in common beyond (1) they all might come from radioactive material and (2) scientists of about 100 years knew so little about them that they simply named them the first three letters of the greek alphabet.
